U.S. Senate Candidate Ted Cruz, left, and his wife Heidi Cruz wave after his speech during the Texas Republican Convention in Fort Worth, Texas, Saturday, June 9, 2012. Cruz and David Dewhurst are locked in a fierce fight for the Republican nomination to fill Texas' open U.S. Senate seat. (AP Photo/LM Otero) less

U.S. Senate Candidate Ted Cruz, left, and his wife Heidi Cruz wave after his speech during the Texas Republican Convention in Fort Worth, Texas, Saturday, June 9, 2012. Cruz and David Dewhurst are locked in a ... more

Ted Cruz addresses a crowd of about 20 supporters at a restaurant in Temple on Saturday, May 26. Cruz vowed that, given a runoff against Lt. Gov. David Dewhurst, he would win the Republican nomination. (Associated Press) less

Ted Cruz addresses a crowd of about 20 supporters at a restaurant in Temple on Saturday, May 26. Cruz vowed that, given a runoff against Lt. Gov. David Dewhurst, he would win the Republican nomination. ... more

Ted Cruz addresses a crowd of about 20 supporters at a restaurant... Photo-2998666.43647 - Houston Chronicle